JPH09188410A - Conveying device for article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obviate the need to arrange a driving source, which varies the attitude of an article, for a separate exclusive use. SOLUTION: Notch parts 11 and 12 for holding are formed in a fixed beam 1 at a specific pitch. With crank pin parts 6b and 6c supported, a crankshaft 4 being an article is fed at a pitch to the fixed beam 1 by a moving beam 3, raised, advanced, lowered, and moved backward through revolving movement thereof. Contact members 33 and 34 are formed integrally with the moving beam 3. When, in a specific position, the moving beam 3 is relatively displaced from the fixed beam 1, a contact member 33 or 34 makes contact with a crank- shaft 4 supported on the fixed beam 1, and the crankshaft 4 is rotated around rotary shaft parts 5a and 5e.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyance device for pitch-feeding articles, and more particularly to a conveyance device for articles which is capable of changing the posture of an article at a predetermined position on a conveyance path.

[0002]

2. Description of the Related Art Some of the articles transporting devices are for raising, advancing,
A movable beam that descends and retracts holds the item in place.
There are some that are pitch-fed to the music. In such a carrying device, there is a demand for changing the posture of an article at a predetermined position. For example, Japanese Patent Laid-Open No. 7-3998
As disclosed in Japanese Patent Publication No. 6, a blasting (shot blasting) is sometimes performed to remove an oxide film on the surface of a forged article. It is required to change the posture of the article so that the surface is cleaned.

[0003]

In order to change the posture of an article at a predetermined position, it is considered that the posture of the article is changed by rotating the article at a predetermined position by using a driving means such as a motor separately. . However, in this case,
Since it is necessary to separately provide a driving means for changing the posture, the size of the entire apparatus becomes large and the cost becomes unfavorable.

The present invention has been made in consideration of the above circumstances, and an object thereof is to make it possible to change the posture of an article without separately providing a drive means for changing the posture of the article. The present invention is to provide a carrier device.

[0005]

In order to achieve the above object, the present invention has the following as a first structure thereof. That is, a movable beam that moves up, forward, descends, and moves backward.
In an article conveying device in which an article is pitch-fed with respect to a fixed beam, the movable beam is displaced relative to the fixed beam at a predetermined position of the article conveying system path. At this time, the contact member is provided so as to contact the article and change the posture of the article. Preferred modes based on the above configuration are as described in claims 2 to 6 in the claims.

In order to achieve the above object, the present invention has the following second construction. I.e. rise,
In an article transporting device in which an article is pitch-fed to a fixed beam by a movable beam that moves forward, down, and backward, the article is ground at a plurality of predetermined positions of the pitch-fed article. An abrading device for sweeping is provided, and abuts on the article to change the posture of the article when the movable beam is displaced relative to the fixed beam at each of the predetermined plurality of positions. The structure is such that the member is provided.

[0007]

According to the invention described in claim 1, since the posture of the article is changed by effectively utilizing the relative displacement of the movable beam with respect to the fixed beam, the drive means for changing the posture separately. It is possible to change the posture of the article without providing.

With the structure as described in claim 2, it is possible to perform the pitch feeding of the article by causing the movable beam to perform a very general and smooth movement called a turning movement.

With the structure as described in claim 3, the posture of the article can be changed by the movable beam while the article is held in a stable state by the fixed beam.

With the structure as described in claim 4, the posture of the crankshaft can be changed at a predetermined position of the conveying system path.

With the structure as described in claim 5, the eccentric position of the crankshaft is held by the movable beam, and the crankshaft is held and transferred by the movable beam in a stable posture. You can

With the structure as described in claim 6, the surface of the article to be blasted can be changed by changing the posture of the article to carry out the blasting over a wide surface area of the article. You can

With the structure as described in claim 7, the article to be scavenged by performing the scavenging and the attitude change of the article at a plurality of positions while obtaining the effect corresponding to the claim 6 is obtained. The surface of the
This is preferable for sufficiently enhancing the polishing effect.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, which schematically shows the entire conveying device, 1 is a first fixed beam and 2 is a second fixed beam.
An article (work) not shown is a beam 3 and a movable beam.
Are pitch-fed from the rear to the front in the figure. A polishing / cleaning station KS for performing polishing / cleaning is provided in the middle of the carrying device, and the polishing / cleaning station KS is equipped with a polishing / cleaning device for spraying a shot blast onto the article. To be done.

A pair of left and right fixed beams 1 and 2 are provided, of which the first fixed beam 1 is arranged only in the polishing station KS. The second fixed beam 2 is arranged substantially in series with the first fixed beam 1 before and after the first fixed beam 1 so that the second fixed beam 2 can be carried in and out of the polishing station KS. It is located in the route. The movable beam 3 has a length substantially equivalent to the combined length of the fixed beams 1 and 2, and the fixed beams 1 and 2 are provided.
Is arranged in parallel with and through the polishing station KS.

FIG. 2 shows the crankshaft 4 as an article in the cleaning station KS. The crankshaft 4 is for an in-line four-cylinder engine, and has a total of five rotating shaft portions 5a to 5e that serve as rotation centers of the crankshaft. Crank pin portions 6a to 6d are formed between two adjacent rotary shaft portions, respectively. Of course, the crankpin portions 5a to 5d are eccentric with respect to the rotary shaft portions 4a to 4e, and the weight portions 7a, 7b, 7c or 7 are provided on both sides of the crankpin portions 5a to 5d in correspondence with the crankpin portions 5a to 5d.
d is formed. The two crank pin portions 6b and 6c on the axial center side are located at the same position in the circumferential direction of the crank shaft 4, and the two crank pin portions 6a and 6d on the axial end portions are the same as the above 6b and 6c. And are located on the opposite side in the circumferential direction by 180 degrees.

In the first fixed beam 1, as shown in FIGS. 2 to 4, a plurality of (two in the embodiment) holding notches 11 and 12 are formed on the upper end surface of the plate member extending in the vertical direction. Each holding notch is formed in a substantially triangular shape that tapers downward, that is, the opening is gradually increased as it goes upward. Each holding notch 11,
Reference numeral 12 denotes a rotary shaft portion 5a at the axial end portion of the crankshaft 4.
And 5e are supported from below and are also held in the front-back direction.

The second fixed beam 2 is, as shown in FIGS. 2, 5 and 6, a main body portion 21 made of a plate material extending in the vertical direction.
And a holding plate portion 22 integrated with the main body portion 21. A plurality of notches 23 are formed on the upper end surface of the main body 21 at predetermined intervals in the article transport direction. This notch 2
The reference numeral 3 indicates a substantially triangular shape that tapers downward, that is, the opening 3 gradually increases as it extends upward. The holding plate portion 22 is integrated with each of the notches 23 by welding or the like with respect to a pair of inclined surfaces in the front-rear direction. Each holding plate portion 22 has the other second
It extends toward the fixed beam 2 side. One notch 23
The two holding plate portions 22 corresponding to 2 have the opening width gradually increased upward and are located at the end portions in the axial direction.
The weight portions 7a and 7d located at the two crank pin portions 6a and 6e are supported from below and also held in the front-rear direction.

As shown in FIGS. 2 and 7 to 10, the movable beam 3 has a pair of left and right plate members 31 extending in the vertical direction and a connecting plate 32 for connecting the lower ends of the pair of left and right plate members 31.
And in the cleaning station KS, a pair of left and right plate materials 3
The two abutting members 33, 34 made of a plate material that connect the upper end portions of the two to each other. A plurality of holding notches 35 are formed at predetermined intervals on the upper end surface of the plate member 31. The holding notch 35 is formed in a substantially triangular shape that tapers downward, that is, the opening gradually increases as it goes upward. Then, among the formation positions of the holding notches 35 having a predetermined pitch interval, one specific notch 35A in the polishing station KS has a depth and an opening width that are larger than those of the holding notches 35. Has been made larger. The contact member 33 is arranged immediately in front of the specific cutout 35A, and the contact member 3
Reference numeral 4 is located immediately after the specific notch 34A.

The movable beam 3 has a notch 35 for holding the movable beam 3.
However, the two crank pin portions 6b and 6c in the central portion of the crankshaft 4 in the axial direction are supported from below and are also retained in the front-back direction. The left and right widths of the pair of left and right plate members 31 are the same as the above two crank pin portions 6b, 6b.
Each of the weight portions 7b and 7c corresponding to c is sized to be inserted between the pair of left and right plate members 31.

The notches 11 in the fixed beams 1 and 2,
Nos. 12 and 23 (22) are set so as to have an equal interval, that is, an equal pitch, in the conveying direction of the article, and the movable beads
The pitch intervals of the notches 35 and 35A of the groove 3 are also formed at equal pitches corresponding thereto. Further, the blasting station KS is provided with a blasting device 41 for blowing shot blast from above the crankshaft 4 conveyed here. In the embodiment, the blasting device 41 is provided at two positions on the left and right. It is provided. Further, the movable beam 3 and the second fixed beam 2 (holding plate portion 22 thereof) are commonly used so as to correspond to a plurality of types of crankshafts 4, respectively, and the first fixed beam 1 is The setup is changed according to the type of the crankshaft 4.

The movable beam 3 can be repeatedly raised, moved forward, lowered, and retracted in order to feed the pitch of the crankshaft 4 as an article. In the embodiment, more specifically, a circular movement rather than a turning movement is performed. Is set to do. In order to perform this turning motion, as shown in FIGS.
One end of a pair of left and right links 36 or 37 is rotatably attached to the front end and the rear end of the frame 3 by a pin 36a or 37a. Rotating shafts 36b and 37b are integrated with the other ends of the links 36 and 37, and the rotating shafts 36b and 37b are rotatably held by the base B.

The links 36 and 37 have the same length, and the movable beam 3, the links 36 and 37, and the base B constitute a four-bar parallel link mechanism. As a result, the rotary beam 36b, 37b is driven to rotate, whereby the movable beam 3 makes a circular motion (the movable beam 3).
Any one point of the arm 3 performs a circular motion having a radius of the arm length of the links 36 and 37). More specifically, when the movable beam 3 is located at the lower stroke end as a starting point, the movable beam 3 rises and retracts, and from the rear stroke end position rises and moves forward, It moves forward while descending from the upper stroke end position, descends from the front stroke end position and retracts, and returns to the original lower stroke end position.

The rotary shafts 36b and 37b are not shown in the drawings, but one motor is used as a drive source for the chain.
The shafts, the sprockets, the shaft mechanism for rotation transmission, and the like are rotated in synchronization with each other in a predetermined rotational phase relationship. It should be noted that, out of a total of four links 36, 37 on the front, back, left and right, for example, only one rotary shaft of one link is rotationally driven, or only two rotary shafts 36b or 37b on one of the front and rear are rotationally driven and other rotary shafts are rotated. The shaft can also be freely rotated.

Next, regarding the operation of the above configuration,
The description will be made with reference to FIGS. 11 to 21, but FIGS.
In 1, the frequencies in parentheses are the links 36, 3
7 shows the rotation angle position of No. 7. First, by rotating the movable beam 3 as described above, the crankshaft 4 as an article is sequentially pitch-fed from the right side to the left side in FIG. FIG. 11 shows a state in which the crankshaft 4 has been pitch-fed to the position immediately before the polishing station KS, and is held by the second fixed beam 2.

From the state shown in FIG. 11 to the state shown in FIGS. 12 and 13 by the movement of the movable beam 3, the second fixed beam 3 to the holding notch 12 for holding the first fixed beam 1. 14 and the feed to the holding notch 12 is completed. During this period from FIG. 11 to FIG. 14, the posture of the crankshaft 4 is not changed.

From the state shown in FIG. 14, the posture of the crankshaft 4 is changed by the movement of the movable beam 3 as shown in FIGS. 15 to 18 (in the embodiment, 180 degrees in the circumferential direction of the crankshaft 4). Degree rotation). That is, from the state shown in FIG. 14, the contact member 34 of the movable beam 3 contacts the weight portions 7b and 7c of the crankshaft 4 while the crankshaft 4 is centered around the rotary shaft portions 5a to 5e. Rotate counterclockwise. Then, in the state of FIG. 18, the crankshaft 4 is rotated 180 degrees in the circumferential direction as compared with the state of FIG.

When the first fixed beam 1 is pitch-fed from the holding notches 12 to 11 as shown in FIGS. Weight portions 7b near the portions 6b and 6c,
As shown in FIG. 21, while holding the crankshaft 4 in contact with 7c, the crankshaft 4 is rotated 180 degrees in the circumferential direction from the state shown in FIG.
Will be held (corresponding to FIG. 13). After FIG. 21, the crankshaft 4 is pitch-fed to the holding notch 11 of the first fixed beam 1 (corresponding to the transition from FIG. 13 to FIG. 14). The specific notch portion 35A is not directly involved in holding the crankshaft 4 (functions as an escape space for the crankshaft 4 when changing the posture between FIGS. 18 to 21).

Although the embodiment has been described above, the present invention is not limited to this and includes, for example, the following cases. The contact members 33 and 34 are provided on the fixed beam 1 side to change the posture, and the crankshaft 4 held by the movable beam 3 approaches the fixed beam 1 when the crankshaft 4 approaches the fixed beam 1. The contact member may be brought into contact with and the posture thereof may be changed.

The article is not limited to the crankshaft 4, but may be an appropriate article. For example, the present invention can be applied to a cast product such as an engine camshaft, which is used for blasting to remove foundry sand from the surface of the cast product. It can also be used to change the posture for applying the paint over a wide range of the surface of the article (it is a painting station instead of the scouring station KS).

The movable beam 3 can be moved in any suitable manner such as a box (quadrangle) movement or an elliptic movement so long as it can move upward, forward, downward, and backward.

A plurality of predetermined positions where the posture should be changed may be provided, and a device for performing a predetermined work on the article such as the polishing and cleaning device 41 may be provided at each of the plurality of positions where the posture is changed. For example, an additional set of one corresponding to the holding notches 11 and 12 of the first fixed beam 1 is additionally set, and correspondingly,
One set of movable beams 3 and 35A corresponding to 35A is additionally set, and the added notches 11 and 1 are provided.
The polishing / cleaning device 41 and the like may be additionally provided corresponding to 2, 35, and 35A. Also, change the posture as shown in FIG.
Only the posture change corresponding to FIG. 18 or FIGS.
It is also possible to change only the posture corresponding to 1.

[Brief description of the drawings]

FIG. 1 is an overall simplified plan view of a transfer device.

FIG. 2 is a diagram showing a crankshaft as an article and a supporting position of each beam.

FIG. 3 is a side view showing an example of a first fixed beam.

FIG. 4 is a sectional view taken along line X4-X4 in FIG. 3;

FIG. 5 is a side view showing an example of a second fixed beam.

6 is a sectional view corresponding to line X6-X6 in FIG.

FIG. 7 is a partially omitted side view showing an example of a movable beam.

FIG. 8 is a plan view of FIG.

FIG. 9 is a sectional view corresponding to line X9-X9 in FIG. 7;

10 is a side view showing a configuration of a portion that gives a turning motion to the movable beam shown in FIG.

FIG. 11 is a diagram showing how the crankshaft pitch is fed and the posture is changed.

FIG. 12 is a diagram showing how the crankshaft pitch is fed and the posture is changed.

FIG. 13 is a diagram showing how the crankshaft pitch is fed and the posture is changed.

FIG. 14 is a diagram showing how the crankshaft pitch is fed and the posture is changed.

FIG. 15 is a diagram showing how the crankshaft pitch is fed and the posture is changed.

FIG. 16 is a diagram showing how the crankshaft pitch is fed and the posture is changed.

FIG. 17 is a diagram showing how the crankshaft pitch is fed and the posture is changed.

FIG. 18 is a diagram showing how the crankshaft pitch is fed and the posture is changed.

FIG. 19 is a diagram showing how the crankshaft pitch is fed and the posture is changed.

FIG. 20 is a diagram showing how the crankshaft pitch is fed and the posture is changed.

FIG. 21 is a diagram showing how the crankshaft pitch is fed and the posture is changed.

[Explanation of symbols]

 1: First Fixed Beam 2: Second Fixed Beam 3: Movable Beam 4: Crank Shaft (Article) 6: Crank Pin Part 11, 12: Notch for Holding (First Fixed Beam) 22: Holding plate portion (second fixed beam) 33, 34: Abutting member (movable beam) 35, 35A: Notch for holding (movable beam) 36, 37: Link (movable beam) For swiveling motion) 41: Polishing and sweeping device KS: Polishing and sweeping station

Claims (7)

[Claims] 1. An article conveying apparatus in which an article is pitch-fed with respect to a fixed beam by a movable beam that moves up, forward, down, and backward, at a predetermined position of an article conveying path. An article conveying apparatus, comprising: an abutting member that abuts an article to change the attitude of the article when the movable beam is displaced relative to the fixed beam. 2. The article conveying apparatus according to claim 1, wherein the movable beam is set so as to make a turning motion. 3. The article according to claim 1, wherein the abutting member is provided on the movable beam, and the abutting member abuts an article held by the fixed beam, An article transporting device characterized in that its posture is changed on a fixed beam. 4. The article conveying device according to claim 1, wherein the article is a crankshaft of an engine. 5. The article conveying apparatus according to claim 4, wherein the movable beam is set to hold a crank pin portion of the crank shaft. 6. The polishing / cleaning station for polishing / cleaning an article according to claim 1, wherein a conveying system path for the article is provided. In the article, the posture of the article is changed by using the contact member. 7. An article conveying apparatus in which an article is pitch-fed to a fixed beam by a movable beam that moves up, forward, down, and retreat. In multiple positions,
A blasting device for blasting the article is provided, and when the movable beam is displaced relative to the fixed beam at each of the predetermined plurality of positions, the attitude of the article is changed by abutting the article. An article conveying apparatus, comprising: an abutting member for performing the operation.